Malicious PDF — malware analysis report

Static analysis result for SHA-256 911034accb1a52b8…

MALICIOUS

PDF

47.6 KB Created: 2021-09-19 09:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-02
MD5: aa84d16a101a4f2be3002557ca35933e SHA-1: c48ab18c8aa31f72755d5d4818350822f0826345 SHA-256: 911034accb1a52b853e76c280baa5860eae9ad672bc0336254ecce47a7f92b57
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was detected as a malicious PDF by ClamAV and an ML classifier. It contains numerous embedded URLs, many of which point to disposable domains and are structured as link farms, indicating a phishing or redirection attempt. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports this, suggesting the document's primary purpose is to host a large number of links to potentially malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6646

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://hamyarsanatco.com/ckfinder/userfiles/files/86761078167.pdf In PDF document text
    • http://dexgerm.com/data/file/userfiles/files/parasoruniwezewinud.pdfIn PDF document text
    • https://yodishit.com/uploads/userfiles/file/jetopevebalararikurip.pdfIn PDF document text
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fc46095ce5---88048657017.pdfIn PDF document text
    • https://bosingels.nl/ckfinder/userfiles/files/79602355996.pdfIn PDF document text
    • http://potya.com/76160335426.pdfIn PDF document text
    • https://clinicamanila.com/ckfinder/userfiles/files/rujoxosagugizig.pdfIn PDF document text
    • http://phuvuongcorp.com/luutru/files/gitejuwotizusapo.pdfIn PDF document text
    • https://alev.az/userfiles/file/65108894112.pdfIn PDF document text
    • http://pomelieagency.com/userfiles/files/31759253636.pdfIn PDF document text
    • https://www.andreivieru.com/ckfinder/userfiles/files/xapowilusavapafikuwelan.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613f9f5526634---firarezapelogevad.pdfIn PDF document text
    • https://agregadoschucuri.sinecsas.com/ckfinder/userfiles/files/42277202729.pdfIn PDF document text
    • http://tc-muehlacker.de/data/tcmuehlacker/userfiles/file/vurarukemogezijixabox.pdfIn PDF document text
    • http://shrlie.com/upload_fck/file/2021-9-16/20210916033410851075.pdfIn PDF document text
    • http://eltprof.ru/userfiles/file/lirafufarovesinavigep.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/61586847045.pdfIn PDF document text
    • http://aroma-es.red/yamituki-n/uploads/files/2329661813.pdfIn PDF document text
    • https://rh-h1tapi-turbo.com/contents/files/gipubopatafozenudutujiba.pdfIn PDF document text
    • http://www.heatandgas.com/EditorImages/file/11269113911.pdfIn PDF document text
    • http://ayurveda-shiatsu-qigong-nice.com/upload/files/pemokubunokovoxub.pdfIn PDF document text
    • https://bartonsteel.com/tony/barton/ckfinder/userfiles/files/ziwip.pdfIn PDF document text
    • http://podiummoda.ru/userfiles/file/donenenedibanamobijirivok.pdfIn PDF document text
    • https://www.pirkitpadangas.lt/ckfinder/userfiles/files/fulomatuzitazu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=world+cricket+championship+2+filePDF link annotation

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